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Former Democratic aide pleads guilty to doxing GOP senators attending Kavanaugh hearing

A former congressional Democratic staff member pleaded guilty on Friday to posting private information about Republican senators who took part in the hearings on sexual assault allegations against then-Supreme Court nominee Brett KavanaughBrett Michael KavanaughOvernight Health Care: Takeaways on the Supreme Court's Obamacare decision | COVID-19 cost 5.5 million years of American life | Biden administration investing billions in antiviral pills for COVID-19 Five takeaways on the Supreme Court's Obamacare decision Supreme Court upholds ObamaCare in 7-2 ruling MORE.

Jackson Cosko, 27, pleaded guilty to two counts of making public restricted personal information and one count each of computer fraud, witness tampering and obstruction of justice, The Washington Post reported.

The five federal felony counts carry maximum penalties up to 20 years in prison. In accordance with a plea agreement, prosecutors said a sentencing range of 46 to 57 months applied under federal guidelines.

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Cosko, who has served about four months in jail since he was charged, will be sentenced on June 13, the newspaper noted.

The agreement comes after Cosko was accused of releasing the private information of five Republican senators last year.

Cosko was reportedly upset after he had been fired from the office of Sen. Maggie HassanMargaret (Maggie) HassanCentrists gain leverage over progressives in Senate infrastructure battle The Hill's Morning Report - After high-stakes Biden-Putin summit, what now? Tensions grow between liberals and centrists on infrastructure MORE (D-N.H.) in May. He said in court filings that he had "engaged in an extraordinarily extensive data theft scheme" by burglarizing the office several times after his ouster to steal sensitive information he could use later.

According to the Post, Cosko said he "became angry" on Sept. 27 as he watched Kavanaugh, President TrumpDonald TrumpWhite House denies pausing military aid package to Ukraine Poll: 30 percent of GOP voters believe Trump will 'likely' be reinstated this year Black Secret Service agent told Trump it was offensive to hold rally in Tulsa on Juneteenth: report MORE’s then-Supreme Court nominee, testify before the Senate Judiciary Committee. Kavanaugh's hearing came after he was accused of sexual assault by Christine Blasey Ford.

Ford testified before the Senate panel in late September that she had been assaulted by Kavanaugh when they were in high school in the 1980s. He vehemently denied Ford's and two other women's allegations in his own subsequent hearing.

Cosko admitted to the court that he responded to the contentious hearings by anonymously editing the Wikipedia pages of five Republican senators to add their phone numbers and home addresses, according to the Post.

The information was quickly removed when it was discovered, and aides contacted authorities.

Cosko said the group included GOP Senate Judiciary Committee members Lindsey GrahamLindsey Olin GrahamGraham quips key to working with Trump: We both 'like him' Centrists gain leverage over progressives in Senate infrastructure battle Lawmakers rally around cyber legislation following string of attacks MORE (S.C.), Mike LeeMichael (Mike) Shumway LeeSenate confirms Biden pick for No. 2 role at Interior Big Tech critic Lina Khan named chair of the FTC GOP senators press Justice Department to compare protest arrests to Capitol riot MORE (Utah) and Orrin HatchOrrin Grant HatchDrug prices are declining amid inflation fears The national action imperative to achieve 30 by 30 Financial market transactions should not be taxed or restricted MORE (Utah) as well as Sen. Rand PaulRandal (Rand) Howard PaulSenate confirms Biden pick for No. 2 role at Interior Rand Paul does not support a national minimum wage increase — and it's important to understand why Fauci to Chelsea Clinton: The 'phenomenal amount of hostility' I face is 'astounding' MORE (R-Ky.) and Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellGraham quips key to working with Trump: We both 'like him' The Hill's Morning Report - ObamaCare here to stay Democrats scramble to unify before election bill brawl MORE (R-Ky.).

Cosko was caught sneaking into Hassan’s office after 10 p.m.  to log on to an aide’s computer. He was recognized by another staffer and ordered to leave, according to court papers.

The other aide then received a threatening email minutes later with the subject line "I own Everything." The message reportedly stated, "If you tell anyone I will leak it all. Emails signal conversations gmails. Senators children’s health information and socials," according to plea papers reviewed by the Post.

Cosko was arrested on Oct. 3.